Radioshack     GPS and Car Buy Online - ship it to a store near you. •  Enjoy free shipping! •  Safe, secure delivery! •  Convenient pick-up locations!  Look for products and stores with this logo. Click here to learn more. Click here to see if stores in your area are eligible. Store selection available at the shopping cart. Not available in all areas. Some restrictions may apply. GPS navigation Clear My Selections GPS Type: Marine Sort by: Top sellers (most bought to least bought)  Price (lowest to highest)  Price (highest to lowest)  View as: Showing 1 - 1 of 1 Product Model: GPAMAP 78sc  |  Catalog #: 55039991 Garmin® GPSMAP® 78sc GPS Receiver Reg: $549.99 Price: SALE Click for product details Garmin's GPSMAP 78sc is the GPS receiver for the discerning boater or water enthusiast. Free Ground Shipping on orders over $50.  Details Availability: Online: In-Stock Usually ships in 1 - 2 business days Add this to your Wish List Add to cart Sort by: Top sellers (most bought to least bought)  Price (lowest to highest)  Price (highest to lowest)